期刊
AIP ADVANCES
卷 7, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4998805
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资金
- Deutsche Forschungsgemeinschaft [SFB 951]
We report on controllable tuning of intersubband transitions in ZnO/Zn0.60Mg0.40O multiple quantum well structures grown by molecular beam epitaxy on sapphire. The transitions from the first to the second electronic energy state within the conduction band are directly observed by infrared spectroscopy. By variation of the quantum well width, the intersubband transition energies are tuned from 290 to 370 meV. The experimental results are in good agreement with theoretical calculations assuming the presence of internal electric fields of 2 MV.cm(-1). (C) 2017 Author(s).
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